Among the statements given below,which statem | vedclass

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(B) Ernst Haeckel proposed the theory of recapitulation,also known as the biogenetic law. His observations suggested that embryos of various vertebrat

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Certain features during the embryonic stage are common to all vertebrates but are absent in adults.

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(B) Ernst Haeckel proposed the theory of recapitulation,also known as the biogenetic law. His observations suggested that embryos of various vertebrates show certain common features during early development,such as pharyngeal gill slits,which are present in the embryonic stage but disappear or are modified in the adult stage. Therefore,option $B$ is the correct statement based on his observations.

Among the statements given below,which statement is correct on the basis of the observations of Ernst Haeckel?

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